What you need to know this instant.

Shop The Look: Blake Lively

Gossip Girl 's Blake Lively shows that with a little sparkle, some dangly earrings, and the right shoes, the most basic of daytime staples (skinny jeans and a white tank) can be transformed into the perfect nighttime party look.

Click through for get Blake's cool look...

First, start with the basics--your favorite part of skinny jeans and a simple tank top. We like Rich & Skinny's lightwash Sleek Skinny Jeans ($89.50) and American Apparel's white racerback tank ($18).

Next add your day-to-night pieces. Blake's boyfriend-style black sequined jacket adds a whole new dimension to her jeans and tank combo. Tibi's sequined shawl collared blazer ($598) or Bebe's square sequined jacket ($159) is perfect for this look and can be worn with everything from a cocktail dress to a men's-inspired slouchy trousers.

Choose a pair of glam heels to complete the dressed-up look. Blake went for Christian Louboutin's rose 'Horatio' sling backs ($506), but Charles by Charles David's Pompadour pumps are also a great option ($102). Then, top your outfit off with some flashy rhinestone earrings like these ones from Forever 21 ($10).

More from Luckymag.com:

Shop The Look: Leighton Meester at 3.1 Phillip Lim

Shop The Look: Michelle Obama

Fashion CopyCat: Yes, It Really Happens!

What's with All the Spam in the Comments Section?

We're sure that you've noticed the flood of spam in the comments section lately. Spammers beware--we are completely on top of it. As we figure out a way to put a stop to this madness, we ask you for your patience and that you don't stop leaving your own comments, because we love hearing from you!